<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="jquery-3.3.1.js"></script>
    <script type="text/javascript" src="click_smile.js"></script>
</head>
<body>
<div style="text-align: center; color: deepskyblue" >
    <h1>测试：点击出现表情</h1>
</div>

</body>
</html>